Gas-burner.



A. HOLTMAN.

GAS BURNER.

APPLIOATION FILED ooT.15, 1901.

Patented Oct. 26, 1909.

ALFRED HOLTMAN, OF KANSAS CITY, MISSOURI.

GAS-BURNER.

Specification of Letters Patent.

Application filed October 15, 1907. Serial No. 397,487.

To all whom it may concern:

Be it known that I, ALFRED HOLTMAN, a citizen of the VUnited States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented certain new and useful Improvements in Gas-Burners, ofwhich the following is a specification.

This invention relates to gas burners and more especially to a burnerfor use with natural gas, and my object is to produce a burner of thischaracter which will operate efficiently and reliably, which can beeasily and quickly placed in or removed from a furnace and which is ofsimple, strong, durable and inexpensive construction.

VVith these objects in view and others, as hereinafter appear, theinvention consists in certain novel and peculiar features ofconstruction and organization as hereinafter described and claimed; andin order that it may be fully understood reference is to be had to theaccompanying drawing, in which-y Figure 1, is a central vertical sectionof a part of a hot air furnace equipped with a burner embodying myinvention. Fig. 2, is a horizontal section of the burner taken on theline II-II of Fig. 1, and also shows the furnace in horizontal sectionin dotted lines. Fig. 3, is a perspective view showing the connectionbetween the gas supply pipe and the gas distributing and valve carryingpipes. Fig. 4L, is an inverted plan view of one member of the burner.Fig. 5, is an enlarged central vertical section of one of thevalve-carrying pipes and the air mixer therefor. Fig. 6, is aperspective view of the fuelopening closure plate of the furnace.

In the said drawing which illustrates an ordinary coal burning hot airfurnace equipped with a burner embodying my invention, 1 indicates thefurnace, 2 the grate therefor, 3 the ash-pit openingfl the door for thesame, and 5 the fuel door opening. The door controlling the last-namedopening may be removed or swung open and in either event the openingwill be closed by a cover 6 having inwardly projecting spring anges 7 toengage the walls of opening 5, and a pair of holes 8, for a purposewhich hereinafter appears.

The burner comprises two independent semicircular membersQ arranged endto end so as to produce conjointly a ring of flame, as hereinafterexplained and each member is provided with a plurality of perforations10, in its underside and inward of said perforations with a dependingsemicircular flange 11 which flange will rest upon the grate 2 or itsequivalent so as to support the burner horizontal, by preference, at thedesired height. Each member is provided with an inwardly projectingtubular stem 12 and screwed into the same is an elbow 13, connected by avertical pipe section 11i to an L-coupling 15, which coupling is securedto the inner end of a horizontal pipe 16 extending through one of theholes 8 of cover 6.

Secured by a set screw 17 on the outer end of each pipe 16 is the bodyportion 19 of an air mixer of common and wellknown type, the air shutter18 of the mixer being adjustable toward the body portion 19 to permitthe volume of air mixed with the gas as hereinafter explained to bevaried. The mixer is secured upon the nozzle of an ordinary valve casing20, the valve 21 having a threaded relation with the casing so that whenturned it will provide for a variation in the volume of gas dischargedby the nozzle through the mixer into pipe 16 or will cut off such supplyof gas entirely. The valve casings 20 are secured to the main gas supplypipes 22, having their upper ends turned inwardly and communicating withand pivoted to a T-coupling 23, mounted on the front end of a supplypipe 24: leading to the gas meter, not shown, and secured in anysuitable manner to an overhead support 25. The supply pipe 24 preferablyparallels the pipes 16, so that pipes 22 can swing toward and from thedoor opening 5.

After the device is once installed in the furnace the householder or anyother inexperienced person can easily and quickly remove it from thefurnace or replace it therein. To effect the removal set screws 17 areloosened; pipes 22 are then grasped and swung upwardly away from thefurnace as indicated by the arrow Fig. 1, the mixers being of coursecarried with them. The cover is then slipped off the projecting ends ofpipe 16 and then the latter are grasped one at a time, for the purposeof removing the burner members through the door opening, it beingunderstood that this can be easily effected irrespective of the lengthof pipes 14 because the threaded connection between the elbows 13 andthe stems 12, permits the burner member to be swung around until it isin substantially the same vertical plane with the pipe 14. In thisposition it can be Patented Oct. 26, 1909. j

A or at any other suitable point.

more easily removed through the ordinary door opening than if it is leftin its horizontal position, though of course if the door opening belarge enough it may be removed without any pivotal action whatever. Eachmember is assembled in the same manner and the actions described arereversed to restore the burner to operative posit-ion in the furnace.

Vhen the gas is turned on a lighted taper is preferably used to igniteit, the taper being introduced through the lower opening 3 It will beunderstood that when the parts are properly assembled the air to supportcombustion will be sucked into the mixer between the body and the capthereof and that by the time it leaves the burner it will be thoroughlyand intimately mixed with the gas and escape with the same through theperforations 10. The flame will rise in the form of a ring or cylinderaround the burner as the depending flange 11 disposed inward of theperforations will tend to deflect all of the gas outward, this beingdesirable because it more rapidly heats the inner shell of the furnaceand hence the air surrounding the same. vAs the flame and heat rises itimpinges upon the pipes 16, so as to raise the temperature of the gasand air therein to a high degree, in fact the pipes 16 get so hot thatthe lower ends of the gas supply pipes 22 are also heated so as tosupply warm gas to the pipes 16, this gas warming the air which it sucksinto said pipes where the mixture is superheated by contact with thelatter. This heating and superheating of the combustible mixture causesthe same to expand and therefore be discharged forcibly through t-heburner orifices with the result employed in any type of furnace withoutremoving or changing the position of any part of the latter except toeither provide it with holes to receive pipe or pipes 16 or equip itwith a perforated plate to cover the fuel door opening.

Having thus described theinvention what I claim as new and desire tosecure by Letters-Patent, is

The combination of a burner provided with a depending supporting flange,a horizontally disposed pipe leading laterallyr therefrom, an air mixerbody portion adjustably secured on the outer end of said horizontallydisposed pipe, a vertically disposed supply pipe mounted to swing to andfrom said horizontally disposed pipe, a valve casing carried by thelower end of said supply pipe, a regulating valve therein, and an airshutter adjustably secured on the end of said valve casing.

In testimony whereof I aiiix my signature, in the presence of twowitnesses.

ALFRED I-IOLTMAN. Witnesses:

EzRA BONE, G. Y. THORPE.

